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National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service
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MIDDLE FORK FEATHER RIVER - PORTOLA (MFTC1)
Latitude: 39.82º NLongitude: 120.44º WElevation: 4850 Feet
Location: Plumas County in CaliforniaRiver Group: Lower Sacramento
Issuance Time: Sep 18 2014 at 7:43 AM PDTNext Issuance: Sep 19 2014 at 9:00 AM PDT
Monitor Stage: 7.0 FeetFlood Stage: 8.5 Feet
Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2013
942
5.19
Dec 5, 2012
2012
1,342
5.82
Mar 19, 2012
2011 4,851 9.03 Mar 17, 2011
2010
774
4.88
Feb 28, 2010
2009
881
4.95
Mar 06, 2009
 Historical High Stage/Flow Events (Period of Record - Oct 1968 to Present)
1969
7,640
10.62
Jan 21, 1969
1971
6,580
10.07
Mar 27, 1971
1980
5,690
9.56
Jan 14, 1980
1970 4,970 9.11 Jan 25, 1953
2011 4,851 9.03 Mar 17, 2011
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ071)
Today: Mostly cloudy with haze. Isolated showers in the morning and then scattered showers and thunderstorms in the afternoon. Highs 70 to 80. Southwest winds 10 to 15 mph.

Tonight: Mostly cloudy with isolated showers and thunderstorms in the evening and then partly cloudy after midnight. Lows 37 to 47. West winds 10 to 15 mph shifting to the northwest after midnight.

Friday: Sunny. Highs 79 to 84. Northeast winds around 10 mph.

Friday Night: Clear. Lows 41 to 51. Northeast winds 10 to 15 mph decreasing to up to 10 mph after midnight.

Saturday: Sunny. Highs 82 to 87. East winds up to 10 mph.

Saturday Night: Clear. Lows 43 to 53.

Sunday through Monday Night: Clear. Highs 77 to 87. Lows 42 to 52.

Tuesday and Tuesday Night: Partly cloudy. Highs 76 to 86. Lows 41 to 51.

Wednesday: Partly cloudy with a slight chance of showers. Highs 71 to 81.
Impacts - E19 Information
7.0 FeetMonitor Stage. Approximately 2350 cfs. No flooding between Beckwourth and Sloat California.
7.5 FeetSome areas of very minor out of bank flow in reach between Beckwourth and Sloat California. Approximately 2850 cfs.
8.0 FeetSome areas of minor out of bank flow in reach between Beckwourth and Sloat California, including Portola. Approximately 3440 cfs.
8.5 FeetFlood Stage. Some minor lowland flooding in reach between Beckwourth and Sloat California, including Portola. Approximately 4100 cfs.
9.0 FeetMinor flooding of lowlands, rural roads, agricultural areas and some low structures between Beckwourth and Sloat California, including Portola. In Portola, water as high as 2 ft below CA Hwy 70 road surface. Water nearing Sleepy Pines Motel and just below propane tanks on Hwy 70. About 2 feet below foundations of Veterans Hall and low homes along river near Hwy 70. South end of West Street in Portola floods. Portion of CA Hwy 89 near Clio begins to flood. Approximately 4800 cfs. Like flood of 3/17/2011.
9.5 FeetModerate flooding of lowlands,roads and low-lying structures in reach from Beckwourth to Sloat California, including Portola. In Portola, Sleepy Pines Motel on CA Hwy 70 begins to experience some minor flooding. Water near bottom of large propane tanks along Hwy 70. South end of West Street floods, nearing lowest homes. River within about a foot of foundation of Veterans Hall and some low homes along river. CA Hwy 89 near Clio flooded. Approximately 5600 cfs, like flood of 1/14/1980.
10.0 FeetModerate flooding of lowlands, structures and roads from Beckwourth to Sloat California, including Portola. Sleepy Pines Motel and other low structures along river in Portola flood. Evacuation of homes on south end of West Street likely to begin. Sewage ponds in Portola may exceed capacity and may need to release to river. River near foundation of Veterans Hall in Portola. CA Hwy 89 near Clio flooded. Approximately 6450 cfs. Like flood of 3/27/1971.
10.5 FeetMajor (near record) flooding of lowlands, roads, railroads, homes, businesses and structures along river from Beckwourth to Sloat California, including Portola...with significant damage. Approximately 7400 cfs. Like record flood of January 21 1969 (7640 cfs).
11.0 FeetMajor (record) flooding of homes, businesses, structures, roads, railroads, bridges from Beckwourth to Sloat California, including Portola. Approximately 8400 cfs. Before gage record, this was exceeded during floods of 2/21/1927, 3/26/1928, 4/6/1952, 12/23/1955, 2/1/1963, 12/24/1964, 1/2/1997. In the 1/2/1997 flood, extensive damage (over $90 million in 1997 dollars) to homes, bridges, roads and railroads. Flooding caused a 50 ft section of CA Hwy 70 between Blairsden and Sloat to collapse.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Reno Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.

Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.